Wavelet image denoising based on the model of local covariance
Dong Xiang-jun · Jiguang zazhi · 2010
It indicates that there is a strong local covariance structure introduced by the edges from the statistical properties of the wavelet coefficients of natural images.We suggest model of local covariance in this paper and estimate the original image from the noisy image.The experimental results show that the method in this paper is obviously superior to the wiener filtering and the wavelet thresholding whether in visual effect or in PSNR.